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Taking into consideration Northern Oceanic Transition Area (NOTA) and Shannon Oceanic Transition Area (SOTA) - which one is in NAT HLA and which one has the same instrument requirements as NAT HLA?

  • A

    Neither NOTA nor SOTA are part of NAT HLA, hence no instruments requirement like in NAT.

  • B

    Both NOTA and SOTA are part of NAT HLA, hence instruments requirement like in NAT.

  • C

    NOTA is a part of NAT HLA and no required equipment like NAT HLA.

  • D

    SOTA is not a part of NAT HLA and no required equipment like NAT HLA, except if routing towards NAT HLA.

Refer to figure.
All airspace to the left of the red line on the figure is HLA.

Both the:

  • Northern Oceanic Transition Area (NOTA)
  • Shannon Oceanic Transition Area (SOTA)

are located in the North Atlantic and are part of the Shanwick Oceanic Control Area (OCA).

NOTA airspace is included in the NAT HLA and hence NAT HLA requirements are still applicable from FL285 to FL420 in NOTA.

However, SOTA is not included in the NAT HLA and the HLA requirements are not applicable, unless the traffic is routing through SOTA into the HLA and requires an oceanic clearance.

Both NOTA and SOTA are handled by Shannon ATC.

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